Diabetic Foot Ulcer: Causes, Stages, Treatment, and Prevention
Have you seen how people with diabetes are so concerned about having cuts or bruises on their bodies? There is a good reason for this vigilance. For individuals with diabetes, such cuts or blisters can quickly escalate into life-threatening conditions.
Sometimes, these wounds develop into ulcers. Diabetic Foot Ulcers are one of the most common complications of diabetes, affecting around 15% of people with diabetes during their lifetime. 1 These open wounds can lead to severe infections, hospitalisations and in worst cases, amputations.
In this blog, we shall understand in-depth about diabetic foot ulcers - why they occur and how to prevent them. We shall also explore modern treatment options, including advanced tissue grafts that are helping such wounds heal faster and better.
What is a Diabetic Foot Ulcer?
A diabetic foot ulcer is a break in the skin of the foot that extends through the epidermis and dermis in a diabetic individual. These ulcers look like open wounds that do not heal as they should. They typically develop on the sole, mostly on weight-bearing areas like the balls of the feet or just under the big toe. 2 3
As per research, approximately 20% of moderate or severe Diabetic Foot Ulcers will require amputation due to bone infection or complications. 1
Symptoms
Serious complications can be avoided with early detection. Symptoms include: 4
- Any changes to your skin or toenails, like cuts, blisters, calluses or sores
- Frequent bleeding
- Discharge of fluid or pus
- Foul smell
- Pain
- Skin discolouration
As per research, many people with diabetic neuropathy may not notice they have an ulcer because they've lost sensation in their feet, making regular foot inspections essential. 4
Who Can Get a Diabetic Foot Ulcer?
Although foot ulcers can occur in anyone with diabetes, some factors raise the risk: 5
- Peripheral neuropathy
- Peripheral artery disease (PAD)
- Long-term diabetes
- Poor blood sugar control
- Prior foot ulcers
- Foot deformities like hammertoes or bunions
- Kidney or heart disease
- Smoking
- Alcohol use
- Black, Native American, and Hispanic people are at higher risk
How Do Diabetic Foot Ulcers Form?
Diabetic foot ulcers form through a combination of three factors: 1 6
- Peripheral Neuropathy: When nerves are harmed by high blood sugar, sensation is lost. Autonomic neuropathy results in dry, cracked skin, whereas motor neuropathy causes muscle atrophy and foot abnormalities.
- Peripheral Arterial Disease: When blood vessels are damaged, less blood reaches the feet, depriving wounds of oxygen and nutrients that are necessary for healing.
- Minor Trauma: Burns, ingrown toenails, barefoot walking, injuries from sharp objects, and poorly fitting shoes are all invisible to those who lack pain perception.
When these factors combine with bacterial infection, ulcers develop and become difficult to heal.
Diabetic Ulcer Stages
The Wagner Diabetic Foot Ulcer Classification System is the most widely used grading system. It classifies ulcers from Grade 0 to Grade 5 based on depth and severity: 7
- Grade 0: Skin is intact with no open lesions
- Grade 1: Superficial ulcer involving only the outer skin layers, but the wound is shallow
- Grade 2: The ulcer is a deep wound
- Grade 3: Deep ulcer with part of the bone visible
- Grade 4: Gangrene (dead tissue) affecting the forefoot or toes
- Grade 5: Extensive gangrene formation on the entire foot, often requiring major amputation
How Is a Diabetic Foot Ulcer Treated?
Treatment depends on ulcer severity. Regular cleaning, dead tissue removal, special shoes to relieve pressure on the wound, appropriate dressings, antibiotics if infected, and careful blood sugar management are all necessary for mild ulcers. 4
Severe ulcers may require oxygen therapy, stronger IV antibiotics, surgery to increase blood flow, removal of infected tissue, or, in extreme situations, amputation. Treating the ulcer's root cause, rather than just the wound, is crucial to preventing its recurrence. 4
How Can a Foot Ulcer Be Prevented?
You can prevent a diabetic foot ulcer in the following ways: 4
- Regular Foot Care: Checking feet for cuts or blisters, washing with lukewarm water, letting them dry completely (especially between toes), and using moisturiser to keep them from cracking are all part of daily foot care.
- Shoe Care: Make sure your shoes fit properly, never go barefoot, inspect your shoes before putting them on, and wear fresh socks every day.
- General Precautions: Get a foot exam every year, see a podiatrist frequently if you're at risk, manage your blood pressure and blood sugar, and give up smoking.
- Cuts and Wound Care: Minor cuts should be treated right away, foot wounds should be seen by a doctor right away, and corns and calluses should not be self-treated.
Conclusion
Although diabetic foot ulcers are dangerous, they are mostly avoidable. Risk can be considerably decreased with good blood sugar management, frequent checkups with the doctor, and proper foot care. Prompt treatment and early detection stop infection or amputation.
For ulcers that don't heal with regular treatment, advanced options like AmchoPlast™ can help. This human amnion-chorion membrane allograft (a special layer from donated placental tissue) uses natural therapeutic properties to help wounds close faster.
Taking care of your feet every day and getting the right treatment can save you from serious problems later. To learn more about advanced wound care solutions for diabetic foot ulcers, visit www.cellutionbiologics.com.
References
1. Sen, C. K. (2023). Human wounds and its burden: An updated compendium of estimates. Advances in Wound Care, 12(5), 281–292. Link
2. International Working Group on the Diabetic Foot. (2019). Definitions and criteria. Link
3. Bandyk, D. F. (2023). Diabetic foot ulcers. In StatPearls. StatPearls Publishing. Link
4. Cleveland Clinic. Diabetic feet: Symptoms, treatment & prevention. Link
5. Tan, T.-W., Armstrong, D. G., et al. (2023). Etiology, epidemiology, and disparities in the burden of diabetic foot ulcers. Diabetes Care, 46(1), 209–221. Link
6. Wang, Y., et al. (2025). Article details from PubMed. Link
7. Cleveland Clinic. Foot and toe ulcers: Treatment, prevention, repair & causes. Link
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